Spark producing and distributing apparatus for explosive-motors.



V. PAQUIT.

SPARK PRODUCING AND DISTRIBUTING APPARATUS FOR EXPLOSIVE MOTORS.

APPLICATION FILED OCT. 4. 1916.

1,244,124. Patented Oct. 23, 1917.

2 SHEETS-SHEET I.

WITNESS l/VI/E/I/TOR haw W MQ/Q ATTORNEY V. PAQUIT.

SPARK PRODUCING AND'DISTRIBUTING APPARATUS FOR EXPLOSIVE MOTORS.

APPLICATION FILED OCT. 4.1916- 1,244,124. Patented Oct. 23,1917.

2 SHEETS-SHEET 2.

@61 9 AATTOR/VEV VITAL PAQUIT, OF STAPLETON, NEW YORK.

SPARK PRODUCING AND DISTRIBUTING APPARATUS FOR EXPLOSIVE-HOTORS.

Specification of Letters Patent.

Patented Oct. 23, 191'? Application filed October 4, 1916. Serial No. 128,648.

To all whom it may concern:

Be it known that I, VITAL PAQU'IT, a subject of the King of Belgium, and resident of Stapleton, Staten Island, in the county i of Richmond and State of New York, have invented certain new and useful Improvements 1n Spark Producing and Distributing Apparatus for Explosive-Motors, of which the following is a specification. 1Qv ,My present invention is embodied in a compact unitary device wherein the coil, condenser, circuit breaker, distributer, timer and certain adjusting devices are effectively combined and conveniently arranged for in stallation and use in connection with multicylinder explosive motors.

The details of the nature and objects of the invention will be more fully understood from the following description in connection with the accompanying drawings, in which 7 Figure 1 is a side elevation of the complete device;

' Fig. 2 is a vertical, longitudinal, central section; v

Fig. 3 is an end elevation;

Fig. 4 is a diagram of the electrical relations and wiring of the Various parts; and

Fig. 5 is a detail of the circuit breaker for the primary of the coil.

As shown in Figs. 1 and 2, the working parts are mounted in and'protected by a suitable frame-work, comprlsing a base 1, and end supports 2, 3, closed in by the removable cover 4 which may be detachably secured in place by any suitable means such as screws 5-5.

The spark coil is of the usual construction, comprising soft iron core 6, coarse primary winding 7 and fine secondary winding 8, all inclosed and suitably insulated by the cylindrical case 9 and end pieces 10, preferably of insulating material. Outside of the casing 9 is the com artment 11 containing a condenser 12 o the usual construction.

The coil and condenser are removably mounted in insulating supports 13-13 adapted to fit the exterior of the casings 9 and 11. Clamping blocks 1414 of insulating material held in place by the cover 4, are employed for the purpose of holding the spark coil in fixed position. The end of the coil case is provided with spring contacts 15-15 adapted slide over and make firm contact with statlonary plates 1616.

The plates 1616 are held by screws17-17 to which are attached the battery wires which supply the current to the primary coil. This arrangement permits of automatic connection and disconnection of the battery circuit whenever it becomes necessary to remove or replace the coil, either for inspection, cleaning or repairs.

The other end of the coil casing is provided with a spring terminal or brush 20, connected with one end of the secondary winding, the other end of the secondary being grounded as will be explained hereinafter. The brush 20 bears upon the conducting ring 21, secured by screws 22, to circular insulating plates 23, 24, the latter parts also serving to clamp between them the circular disk 25, carried by the stud shaft 26. The latter is secured by anut 27 in the journal 28. The journal 28 is preferably recessed and-provided with a protecting cap 29.

The ring 21 is conductively connected with a conducting plate 30 provided with a conducting terminal 31 arranged to rotate in close proximity to the terminals 3232 through which connection is made to the sparking plugs of the motor.

For the purpose of driving the distributor in proper synchronism w1th the circuit breaker, a gear ring 31 is clamped between the disks 21 and 22 in position to mix with a pinion 32; on shaft 33, mounted in ball bearings 34. This shaft is provided with a cone seat 35 whereon is secured by means of a nut 36, a gear of suitable size or other suitable means whereby said shaft may be connected with the engine so as to be driven in accurate synchronism therewith. The other end of shaft 33 carries a triangular cam 34 which operates the circuit breaking members.

By reference to Figs. 2 and 5, it will be seen that the circuit breaking mechanism is mounted on the end piece 2 of the casing and comprises a boss 37 secured to the latter and rovided with a semi-circular groove 38. he cap 39, provided with a similar groove, carries the circuit breaking members and the insulating support therefor. This cap is rotatably held in position by means of balls which are inserted in the grooves 37 and 38 through radial recesses closed by the screw plugs 40-40, Fig. 3.

The cap 39 has tightly secured therein an annular insulating block 41 on which are mounted the rigid posts 42- 42 to which are rigidly secured the leaf springs 43-43 having screwed thereto in their free ends, breaker contacts 4444 which may be ad just/ably secured in desired position by lock nuts 45.45. The cooperating stationary contacts 46'-46 are rigidly mounted upon the post 42, which is also rigidly mounted upon the insulating block 41. The springs 43 are provided with rojecting wearpieces 4747 which are pre erably of hard fiber insulating material. The springs are perfectly arallel and the wearpieces .are located diametrically opposite each other ina plane passing through the axis of the triangular cam. Hence the circuit breakers are operated by the cam, alternately, at equal intervals, giving a total of six breaks per revolution of the cam. By reason of this s mmetrical arrangement, it becomes possible to advance or retard the time of the breaks with respect to the cam and conse-. qllliently with respect to the crank shaft of t e engine to which the cam is geared, by simply rotating the cap 39, thereby angularly shifting the diameter on which the contacts 47-47 are located. 7 This movement may be controlled from a distance, as for instance, from an automobile steering wheel through the operating lever 60. It will be noted that movement of this lever through a comparatively small am will serveto ad vance or retard the spark to the fullest extent required in practical operation. 7

This adjustment will slightly shift the time and position of the discharge of the secondary coil from the distributing terminal 31 to the plates 32 leading to the respective spark plugs, but, it will be noted that the angle of this shift is a very small one and I make the plates 32 of suificient extent so that the distributing terminal will always be opposite some portion thereof at the time of the discharge.

Preferably the circuit breakers are serially connected in the battery circuit so that cam operation of either of them serves to break the primary circuit. By using two of them the desired high number of breaks per second can be achieved with half the number of vibratory movements which would be necessary if only one spring vibrator were used. This slower speed of working results in much greater certainty of contact making and involves much less danger of fatigue and breaking of the springs. This is particularly desirable where the device is used, for instance, on a twelve-cylinder motor requiring six makes and breaks per revolution of the crank shaft.

Mounted on the end support 3 is a small resistance box 48 adapted to be rotated to a desired-position of adjustment by the thumb nut 49, and upon the cover 4 is an auxiliary spark gap 50 adapted to be adjusted by means of a thumb nut 51. The purposes of these will be explained more fully in connection with the wiring of the device.

As shown in Fig. 4, the battery B is serially connected through the adjustable resistance 48, the circuit breaker 42, 44, 46, 46, 44, 42 and the primary winding 7 of the induction coil. Bridged across the latter is a condenser12. One end of the secondary winding 8 is grounded at G, while the other end passes through the adjustable spark plug 50, brush 20, ring 21 and distributer terminal 30. The terminal 30 travels circularly past stationary contacts 32, thus supplying the high tension currents successively to the circuits of the spark plugs diagrammatically indicated at S. From the spark plugs circuit is completed through the ground G, to the round G, preferably through the frame of t e engine.

The purposes of the resistance box 49 and spark ca 50 are to adapt the device for use with di erentstrength batteries which are used by different engine makers, so that the tension of both primary and secondary currents ma be regulated at will, with a view to avoiding injury to the primary or secondary windings and breaking down of insulation either in the coil or the ark plugs. I prefer to make the coil powerfi il enough to give a sufficiently high voltage spark even when operated on a four-volt battery. When this coil is used, by example, with a twelvevolt battery the auxiliary spark ca 50 ma be adjusted so that the Volta" e on t e spar plug will not exceed a desire safe limit. If used on a four-volt battery, however, the spark cap terminals may be screwed tight together and the auxiliary spark gap thereby entirely eliminated and also the resistan'ce box .49.

While I have thus described a referred form of my invention, it is obvious that changes may be made in the apparatus within the spirit and the scope thereof.

I claim:

1. A device of the class described, comprising a suitable frame or casing, a coil and condenser, a rotary distributer adjacent the coil, a drive shaft and gearin adapted to rotate the distributer in fixe angular relation with respect to the crank shaft of amultiple cylinder explosive motor, a rotary cam provided with re arl spaced cam projections, in combination with a plurality of circuit breakers symmetricall distributed about Said cam. and provided with suitable wearpieces in operative relation thereto, the number of projections on the rota cam being three and the number of circuit breakers and wear-pieces being two.

2. A device of the class described, comprising a suitable frame or casing, a coil and condenser, a rotary distributer ad'acent the coil, :1. drive shaft and gearing a apted to rotate the distributer in fixed angular relation with respect to the crank shaft of a multiple cylinder explosive motor, a rotary cam provided with regularly spaced cam projections, in Combination with a plurality of circuit breakers symmetrically distrib uted about said cam and provided with suitable wearpieces in operative relation thereto, the number of projections on the rotary cam being odd and the number of circuit breakers and contacts being even.

'3..A device of the class described, comprising a suitable frame or casing, a coil and condenser, a rotary distributer adjacent the coil, a drive shaft and gearing adapted to rotate the distributer in fixed angular relation with respect to the crank shaft of a multiple cylinder explosive motor, a rotary cam provided with regularly spaced cam projections, in combination with a plurality of circuit breakers symmetrically distributed about said cam and provided with suitable wearpieces in operative relation thereto, the number of the rotary cam projections and of the circuit breaker wearpieces being one odd and the other even.

4. In a device of the class described, a suitable frame or casing, a coil and condenser, means for clamping them in the casing, slidable contacts for conductively connecting the coil with the casing, a rotary distributer adjacent one end of the coil, a drive shaft and gearing adapted to rotate the distributer in fixed angular relation with respect to the crank shaft of an explosive motor, and a triangular cam mounted on one end of said shaft, in combination with two circuit breakers arranged on opposite sides of said cam and provided with similar wearpieces located diametrically opposite each other. 7

5. In a device of the class described, a

cam shaft adapted to rotate in fixed angular relation with respect to the crank shaft of an explosive motor, and a triangular cam carried by said shaft, in combination with two circuit breakers provided with camcontacting wearpieces arranged diametrically opposite each other in a plane passing through the axis of said shaft.

6. In a device of the class described a cam shaft adapted to rotate in fixed angu ar relation with respect to the crank shaft of an explosive motor, and a triangular cam carried by said shaft,in combination with two circuit breakers provided with camcontacting wearpieces arranged diametrically opposite each other in a plane passing through the axis of said shaft, and means for angularly shifting the position of both said circuit breakers about the axis of said shaft to advance or retard the timing of the cam contacts with respect to the crank shaft of the motor.

7. A device of the class described, comprising a suitable frame or casing, a coil and condenser, a rotary distributor, a rotary cam shaft provided with regularly spaced cam projections having its axis parallel to the axis of said rotary distributer, and means adapted to rotate the distributer in fixed angular relation with respect to said cam, in combination with a plurality of circuit breakers symmetrically distributed about said cam and provided with suitable wearpieces in operative relation thereto, the number of rotary cam projections and of circuit breakers being one odd and the other even.

Signed at New York city in the county of New York, and State of New York this sec- 0nd day of October, A. D. 1916.

VITAL PAQUIT. 

